There are 20 questions in this quiz. Complete it at your leasure and mail me with your score. Good Luck!
How many different types of shower could you find on a felt run? What are they
Three
Four
Five
Six
What are the two basic methods of cleaning felts?
Jet washing and Fan washing
Scrubbing and Scouring
Chemical and mechanical
Needle jets and flooding showers
What two pieces of equipment are used for mechanical cleaning?
Showers and suction boxes
Flooded nips and suction boxes
Detergent showers and suction boxes
Detergent showers and high pressure showers
What two things are used to remove contamination by chemical means?
Chemical reagents and power showers
Chemical reagents and suction boxes
Power showers and suction boxes
Chemical showers and lubricating showers
The water carrying capacity of a felt is a function of its void volume. What two measurements would you use to SIMPLY calculate its water carrying capacity?
The volume of the felt and the volume of the base mesh
The area of the felt and its density
The mass of the felt and its density
The volume of the felt and the volume of the fibres
In calculating the water carrying capacity more accurately, what other term would you use and how would you use it?
Subtract the moisture content of the felt
Add the moisture content of the felt
Subtract the volume of Batt fibres
Subtract the volume of the mesh
What are the three types of materials used to make modern press felts?
Wool, polyester and polypropylene
Polyamide, nylon and polypropylene
Polyamide, polyester and batt fibre
Polyamide, polyester and polypropylene
Which is the density of polyester fibre ?
1.4
1.3
1.2
1.0
Which is the most common fibre used for making press felts?
Wool
Polyester
Polyacrylate
Polyamide
What are the two categories of deposit found on felts?
Wet and dry
Organic and inorganic
Sticky and Pitchy
Hard and soft
Where do the organic contaminants usually come from?
Bacteria
Secondary fibre
The backwater
Slime and moulds
Choose which 4 organic materials that may be deposited on felts
Rosin, defoamer, wet strength resin, kaolin
Rosin, defoamer, chalk, retention aid
Rosin, defoamer, wet strength resin, alum
Rosin, defoamer, wet strength resin, retention aid
Name 4 inorganic deposits that may be found on felts
Clay, talc, calcium carbonate, titanium dioxide
Rosin, talc, calcium carbonate, titanium dioxide
Clay, rosin, calcium carbonate, titanium dioxide
Clay talc, defoamer, titanium dioxide
Where on the felt are the internal deposits most likely to collect?
Spread evenly between the batt and the mesh
Mainly on the base, but some on the batt
On the batt fibre
On the base fabric
How many types of operational problems can be caused through dirty felts?
Six
Seven
Eight
Ten
When installing high pressure showers, several things should be considered. Which of the list below is NOT one of them?
Location of shower
Direction of shower
Inside or outside position
Vertical oscilliation frequency
For chemical cleaning, felt deposits fall into four main categories. Which is the correct group of four?
Ash, acid extractable, alkali extractable and fibre
Fibre, acid extractable, alkali extractable and solvent extractable
Ash, acid extractable, alkali extractable and solvent extractable
Organic, acid extractable, alkali extractable and solvent extractable
What contamination falls only into the two categories of ash and acid extractable?